Generations

The Subaru Impreza has been around since 1993, usually flying under the radar, but earning an underground following and industry acclaim as a highly successful rally car. A high-performance variant -- the WRX -- had existed for some time in foreign markets, but only made it to the United States in the early 2000s.

With refined steering, a sport-tuned suspension, agile handling and rip-roaring engine performance, the current WRX has become a class standard.

2013 - 2014 Subaru Impreza WRX

Major changes included:

This WRX features a turbocharged 2.5-liter four-cylinder with 265 horsepower -- the same engine as in previous years. However, the STI upgrade increases the horsepower to 305. Additional changes appear primarily in minor changes to options and features.

2008 - 2012 Subaru Impreza WRX

Major changes included:

The third-generation Impreza WRX boasted a tubrocharged 2.5-liter four-cylinder engine with either 224 horsepower, depending on the model year. A five-speed manual transmission was standard. Major changes to the suspension -- which was initially tuned for comfort -- occurred in 2009. In addition, that year Subaru boosted the horsepower to 265. The front grille was redesigned in 2010, when Subaru also introduced a limited edition WRX model.

2002 - 2007 Subaru Impreza WRX

Major changes included:

The second-generation WRX featured a turbocharged 2-liter four-cylinder engine with 227 horsepower. A five-speed manual or four-speed automatic transmission were available. Changes to the front fascia and suspension arrived in 2004. In 2006 Subaru again redesigned the front end and changed the engine to a turbocharged 2.5-liter four-cylinder with 230 horsepower.

1993 - 2001 Subaru Impreza WRX

Major changes included:

The first generation Impreza featured a 2.2-liter four-cylinder engine. The WRX version was turbocharged and featured all-wheel drive. Subaru made all-wheel drive standard in 1997. Other changes included an increase in the horsepower and torque, a hood-scoop and changes to the suspension system. Many of these changes were in response the the success the WRX experienced in the world of rally racing.